Motorad 1KR381 Engine Crankshaft Position Sensor

Engine Crankshaft Position Sensor for GM and Isuzu

Motorad 1KR381 is an engine crankshaft position sensor built for OE-style accuracy and stable engine management. It is a direct-fit replacement for select Chevrolet Colorado, GMC Canyon, Hummer H3, and Isuzu i-Series applications from 2004-2007.

• Engine crankshaft position sensor for ignition and engine management systems
• Black housing with oblong female connector
• Blade terminals, 2 terminal count, 1 connector
• Single mounting hole design with plug-in connector type
• Sensor body diameter: 0.70 in
• Fits 2004-2007 Chevrolet Colorado, N/A
• Fits 2004-2007 GMC Canyon, N/A
• Fits 2006-2007 Hummer H3, N/A
• Fits 2006 Isuzu i-280, N/A
• Fits 2006 Isuzu i-350, N/A
• Fits 2007 Isuzu i-290, N/A
• Fits 2007 Isuzu i-370, N/A

This Motorad crankshaft position sensor is used to report crankshaft position and engine speed data to the vehicle control system. Accurate signal input supports proper ignition timing, fuel delivery, and overall drivability in GM and Isuzu trucks and SUVs. Part number 1KR381 is also referenced for the same application under OE-style cross references.

Common Replacement Symptoms

• Hard starting or extended crank time
• Intermittent stalling or sudden engine shutdown
• Rough idle and inconsistent engine performance
• Check engine light related to crankshaft position signal faults
• Misfire or hesitation caused by incorrect engine speed input

Installation Notes

Verify connector shape, terminal style, and mounting location before installation. This sensor uses a single mounting hole and a plug-in female connector, so the existing harness and mounting point should match the original configuration. Confirm vehicle application by year, make, and model before ordering.

Quality Assurance

Motorad manufactures and tests these crankshaft position sensors in IATF 16949 certified facilities to support consistent fit and signal accuracy. Part number 1KR381 is backed by a limited lifetime warranty.